1. Department of Public Health and Primary CareUniversity of Cambridge Cambridge UK
2. School of MedicineDuke University Durham North Carolina
3. MRC Epidemiology UnitUniversity of Cambridge Cambridge UK
4. Department of Recreation Management and Exercise ScienceKenyatta University Nairobi Kenya
5. Centre for Public Health ResearchKEMRI Nairobi Kenya
6. Department of Nutrition, Exercise and SportsUniversity of Copenhagen Copenhagen Denmark
7. National Food InstituteTechnical University of Denmark Soeborg Denmark
8. Department of Public HealthUniversity of Copenhagen Copenhagen Denmark